Compounds of copper for use in combating fungi and the like



I comroums or conf rm For; Usia m commits-me rnxer hm) Ho Dre wing som acomm, 1923.1 SerieI in; 672,015.

This inventionrelates to compounds of honate snd copper hydroxide has the desired c pper for use in comb ning' fungi and the; and necessary properties of bulkiness and like. nnd more particularly tosrnetlmd of ability .to adhere to render it useful as an combating deleterious fungi and insect, pests, insecticide and fungicide for treating seed especially tl' e "comhat-i'n; of wheat smut gmim' The basic suit of'copper possesses through the use in dry forrn of a hasi'csult, the hulk properties and stickines needed of coppcr and h i'dro'us coppercompoundsof to prove 'eflective in wheat treatment. 1 3 great bulk and adhering properties, together The hullry copper compound may be with a method of preps-ring such copper. formed in variousways but I have found compounds. I that byftreating copper sulfetewith milk I An object of the invention is to produce of lime or sodiuin hydroxid free from caran insecticide and fungicide for the relief bonate, a basic salt-of copier is formed that" of agriculturists who now suz'ler greacloss' is extremely bulk and SIM \Vhen' copper through the uncertainty of present methods sulfate is treat'ed with sods ash a bulky blue f of combating fungi, suchas wheat smut precipitate is formed. By heating this p re- I, resent methods cornhating fungi concipitat'e in its mother liquor. to approximate- 7 sist in the well known use of formaldehyde l-y 140 F., a'sudden change takes place, the or copper sulfate or copper sulfate and li me, precipitate turning light greenish-blue and and consist essentially in dipping the Seed becoming-slightly less bulky; At-th'is point, grain in solutions of these. substances imthe/precipitate is-immediately removed from mediutely before seeding. By these meththe rnother liquor and quicklydried. 7 If the 7 the seed rnust be treated immediately temperature is carried too higher the heat before seeding or otherwise the germinating treatment continued too long, the blue-green i power of the-seedis destroyed hv any con precipitate becomes brown and then black.,: tact with, the chemicals used; Under the changing to an 0-xide. While the exactnar most favorable conditions, some or all of the tune of the bulky copper ma'terial'formed is 9 grain is ruined and fails to germinate.- unknown, it. is believed that the heat brings. By the use of the process forming the about a crystallization ofthe copper carsuhjcct matter'of the present. invention, each bonatewhich forms the hull; of the precipigram of seed is coated with a firmly adhermy? and at the same time, prevents the forin: layer of a copper compound and this imationof double or basic, compounds with. ccutincmay be done atany convenient time copper hydroxid'e'present. Enough hydroxor in any convenient manner, usually by ide remains to give the bulky and sticky rolling thev s ed grain in a'barrel with a properties, find the'particles of crystalline copper compound at the rate of from 2' to 4 copper carbonate present prevent the hyounces of th cor'npound to each bushel of droxide particles from forming into a hard seed grain. By this method'of treating seed mass. I grain, the germinating power of the grain As stated, other methods may be employed is not affected and a great sari'n'g in seed is in preparing the bulky copper compound thus possible. 4 I and the invention consists essentially in the urn aware that the use of copper carhonprovision of a copper salt or 2; mixture co'n- I ate in various forms has been proposed andtaining the copper salt of bulky and adherto some extent, has been used, but on no ing nature in which at least 50 per cent of- "-"Tcount of the heavy, non-adhering properties the material is copper; having a bulk of less of the copperearbonate of commerce, it has iha: 40 pounds per cubic foot, loose packed, never come into general use. v and e. sticking povi'erto Wheatf at 18515; In the present invention, I provide a cop- 80 per cent; that is. one gram of the powder per compound of a bulky, sticky character when shaken with grams f Clean Wile-Ill? wnich makes the use of a dry treatment will Sl'lOirV at least. .8. grams adhering to the: o9 1.- 41 \Vl:8ali grains. I' i l I have found that WPPflfcerhonate may I Wihile have described in detail the pie- 5 Y is formed in both heavy and light forms ferred practice of my PI it 55-150 be 'znilnr to magnesium carbonate. This light, understood that '1 details. of P u rapper carbonate-or mixture of copper carand proportions 4 of ingredients, may be 1596982 OR IN 423/6 10f the-subjoined claims.-

c1aim:- e 1 1. Afunglclde. COI DPIISIDgB, basxc salt of dapper pf greatv bulk and adhenng power fffwl'dely varied and that. known. fchemical i equivalents may be employed in piace'of the L n 1z2 tez'ia1s. menti0ne1i,- 7 from the Spirit Of the invention of the scope HIV . Having thusdesc'ribed' ha'vingan apparent specific gravity belqw 2.. A fnngicidecomprising basic, salts of v copper of greatbulk eontai-mng more than fifithaut j departing invention; -I

p' c e n t dipper ke ghmg less than 40 pounds per cubic 500%.

3. The meth0d f making a "fang-lade which comprises treating a. eoluble copper salt with 21 hydroxide. heatihg the. preciipL; tate to substantially 14*} R. and drj'ing it.-- Q. The method of making a fungicide which comprises treating copper sulfate with a hydroxide. heating the precipitate to substantially 140? F1 and drying it In testimonywhereof. I affix Th3 'signa.

I LB BB i-fi WHAfi 

